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我是一位七岁孩子的母亲,根据这七年来给孩子打预防针的体会,我觉得何时给小儿预防接种很重要,接种的次序如下:
I am the mother of a seven-year-old child. Based on these seven years of experience in giving vaccinations to children, I think it is important when vaccination is given to children. The order of vaccination is as follows: